151232201 has 4 divisors (see below), whose sum is σ = 153362304. Its totient is φ = 149102100.

The previous prime is 151232189. The next prime is 151232203. The reversal of 151232201 is 102232151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151232201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151232201.

It is not an unprimeable number, because it can be changed into a prime (151232203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064945 + ... + 1065086.

It is an arithmetic number, because the mean of its divisors is an integer number (38340576).

Almost surely, 2^151232201 is an apocalyptic number.

It is an amenable number.

151232201 is a deficient number, since it is larger than the sum of its proper divisors (2130103).

151232201 is an equidigital number, since it uses as much as digits as its factorization.

151232201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130102.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 151232201 is about 12297.6502227051. The cubic root of 151232201 is about 532.7802176690.

Adding to 151232201 its reverse (102232151), we get a palindrome (253464352).

Subtracting from 151232201 its reverse (102232151), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 151232201 in words is "one hundred fifty-one million, two hundred thirty-two thousand, two hundred one".